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If you really want to go hardcore: McMaster sells nylon core hydraulic hose that I 100% guarantee won't sweat anything. Note however that it is a total bitch to install on barbed fittings. I bought some to replace an A/C hose on my school bus, then regretted it until the damn barbs were finally pushed in. Pressure rating is 2,000 PSI.

MattDavid: How well is this working for you? I am about to replace the master and see that the hose is sweating bad (when I noticed my master was leaking the fluid was low and the hose seemed dry).

Bill: You indicate the hose is 3/8", ID I presume. That seems large and want to double check before I start.

NKemp, I had bought a brand new NOS hose that started sweating after about 1 year or so. This one is still dry as a bone, but it has not passed the 1 year mark yet. The only trick is make sure you don't kink it, and if you twist it ever so slightly, it won't.

I gave Drew Guillory a bunch of Autozone part numbers on the old Google Groups site -- see if he still has them. Some of them were 5/16", which I know would work even on a 3/8" barb. A mixture of transmission cooler hose and power steering fluid hose.

that was me. it was just some 3/8" ID clear PVC tubing from home depot. It lasted about 2 weeks before it started sweating and turning very soft. ordered Rob Grady's replacement hose (Aeorquip AQP rubber) and I've been good ever since.